Firefox Support Forum

Possibly there was an auto update of MOZILLA FIREFOX on our DELL LAPTOP (Windows 11). Now, we cannot get a Mozilla window to open - due to error message:

XUL Runner Error: Platform version '118.0.1' is not compatible with minVersion >= 118.0 maxVersion <=118.0

Can someone please help us get back to a previous version of Mozilla Fire. Perhaps it is a Windows error. I have no way of knowing. Please help me. My email is: [removed email from public] Thank you.

I'm running Firefox 99.0.1 on Ubuntu 22.04. Recently (I think since I updated to Ubuntu 22.04 about a week ago), Firefox has been refusing to show me file upload dialogs. When I click a button that's supposed to give me one, nothing happens.

This has been happening with: - The "attach files" button in Gmail - A file upload button on Gradescope (website for managing homework assignments) - File -> Open File... and Ctrl+O.

Dragging and dropping a file onto an email in Gmail does attach the file -- it's just that the button doesn't work.

I've tried restarting, and I've tried running Firefox in Troubleshoot Mode -- so far nothing has fixed the problem. What else should I do?

Hello,

I noticed that a setting on the about:config page was removed: the "security.csp.enable" setting. I was using this setting to disable CSP to be able to load local JS scripts on some non-locally hosted sites, for debugging and development, work related purposes.

Was this setting really removed? Is there a way to disable CSP on Firefox on the latest version?

Thanks! Gabriel.

History and addons have synced succesfully, but despite trying various things, bookmarks have not. I am unable to access the previous machine on which they originate because of a catastrophic failure. Any help?

After updating to Firefox 103, everything in the browser including web pages, are way too big. Oversized. What the heck happened? Why do they do this? On the tool bar with the address field, on the right, I have a zoom icon, etc., and they're all much bigger!

I could adjust zoom, but this is not right. It's all messed up!

Yes I went into Customize Tool bar - Density - and it was already set to "compact - not supported"

I went into about: config - browser.display.os-zoom-behavior - changed to zero. Nothing happened.

I went into the windows settings - display - set to 125% which it always was. Changing to 100% didn't do anything. Went into display - Make display bigger - and it's 160, where I always had it.

Not happening in Chrome or Windows. So it's Firefox.

Something happened to the Firefox browser (Windows 10) that caused a file named "old firefox data" to appear on my desktop. My passwords, bookmarks and other data have disappeared in the browser. How do I restore them?

I'm having a number of issues with my Firefox out of nowhere.

1. My mouse will no longer scroll, nor will my keyboard arrows. I must use my touchscreen. 2. I have "new tabs" instead of "new windows" selected, yet if I click anything, it goes to a new window. 3. I cannot close tabs without right clicking. 4. I cannot SWITCH tabs at all. 5. I cannot close Firefox without going to my start bar and right clicking. 6. Firefox seems to be aware something is wrong, opens up in a troubleshooting mode... and then doesn't troubleshoot.

(It is entirely possibly my infant slammed on the keyboard and changed a setting I can't find.)

For the last few days Firefox has been having loading problems. Most of the time (95%) Firefox only opens a white screen. I do not get the Pocket Home Page, if I type a URL in it simply tries to load it but nothing ever loads. If I try to type in "about:profiles" nothing happens. Occasionally a link will load. Although then if I try navigating else where it doesn't load. Firefox is up to date, that was the first thing I checked. I refreshed Firefox yesterday and that seemed to work, although today it was back to not loading. I uninstalled and reinstalled today. I tried refreshing after installing, setting up a new profile and nothing works. I can navigate the web on Chrome and get e-mail through Outlook just fine. I've scanned my computer with Webroot and found nothing. I can not get anything to load from navigating with navigation bar. I tried typing in "about:support" and it didn't load. I can go to the Help menu and select "more troubleshooting options" and then The Troubleshooting info loads.

Can anybody help me figure this mystery out?

Hi Guys,

For a couple of weeks now, and since the last update (102.0.1 64-bit), my Firefox displays odd characters in some pages and in all emails.

This issue doesn't happen in safari or Chrome.

I've cleared all cookies, and browsing data multiple times and re-installed Firefox and the issue comes back every time.

See attached a couple of samples

Hi, my Firefox keeps crashing on using youtube (on openening youtube.com or any site which integrates a youtube video). My crash report ID is as follows: bp-d25e9417-a29a-4ce2-ac69-1e8460220329 Is there anything I can do? Thx a lot, Maike Scotland

Hi there; I like Firefox and I always recommend it to others, please keep it the way it was, simply good privacy and easy to use and work with. It used to was possible to clear cookies for a specific website but now it's gone! and I can't figure out how can I delete/clear cookies for a specific website! I think even if there is a way to do this, you've made it so complicated! it was easy, just click on setting icon next to website address in address bar and clear cookies! once I tried this and it took me to other pages and ended up to clearing all my cookies in entire Firefox! and this made difficulties for me to find all my username and passwords and enter them one by one...

Please make it simple as before. Thanks.

I upgraded to Ubuntu 22.04 recently. Since then Firefox 104.0.2 (64-bit) has been arbitrarily freezing; sometimes i have to restart the computer while most of the times I am able to kill the Firefox main process and restart Firefox.

The freeze occurs when i try to save a Web page; i don't see any "logic" as to which Web pages cause Firefox to freeze. It seems totally arbitrary.

I clear my downloads list everyday (sometimes more frequently than that) and clear cookies & cache everyday.

I have selected "no proxy" by default, in 'Connection Settings'.

This never happened until after i upgraded to Ubuntu 22.04.

I've browsed the support pages and don't find anything relevant to my problem. If I'm overlooking something, I apologize in advance!

I have attached a 'screen capture' image of Firefox processes just before i killed the main process.

Thanks in advance for any suggestions. Ramki

I got a new computer recently and it was already upgraded to windows 11. I downloaded Firefox because it is my main go-to. It worked for a few days then all the sudden, it just stopped loading, if I tried to search something it would just load forever and never show up. Even dev tools would not display, it just was like in a frozen state, I tried downloading the Developer version of the browser, nope! Deleting all program files, Nope! Then when I tried to use edge, smooth as can be. What the heck is going on here?

I'm really confused about how profiles and sync work together for what I assume is a pretty common use case, especially now will all the WFH. I have two devices:

1. Personal laptop 2. Work laptop

I'd like to keep my bookmarks, history, addons etc separate, but be able to access my work environment when working from home on my personal laptop. I've read a lot about profiles and sync and multi-account container but I'm still confused as to how I achieve what I'm trying to do.

Having multiple profiles on one device is straightforward. But AFAIK if I attach two profiles to the same sync account, and try to sync both between two devices, it will only sync one of the profiles (and then merge everything if I try to sync the other). And if I have two separate sync accounts (work and personal), each with a single profile, I can't switch between them without also merging everything. How does one achieve this then?

Hello, I've followed Firefox's invitation to install and update the browser on my Mac. Unfortunately the new version is not compatible with OS 10 El Capitan, my operating system, so now I can't use Firefox at all. How I do get the old version back?

Thank you, Lars

When clicking on an article link in an email from Wired, "Header overflow" is the only thing that is displayed in Firefox. It worked prior to latest upgrade. The link works fine when using Safari. Here is the link: https://link.wired.com/click/26376218.29116/aHR0cHM6Ly93d3cud2lyZWQuY29tL3N0b3J5L2hvdy10by1wcmVwYXJlLWNsaW1hdGUtY2hhbmdlLW5vdz91dG1fdGVybT1QNCZ1dG1fc291cmNlPW5sJnV0bV9icmFuZD13aXJlZCZ1dG1fbWFpbGluZz1XSVJfRGFpbHlfMDExNzIyJnV0bV9jYW1wYWlnbj1hdWQtZGV2JnV0bV9tZWRpdW09ZW1haWwmdXRtX2NvbnRlbnQ9V0lSX0RhaWx5XzAxMTcyMiZieGlkPTVjYzlkZmViZmM5NDJkMTNlYjFlNWY5ZSZjbmRpZD0yMzU2ODE5NCZlc3JjPUFVVE9fT1RIRVImc291cmNlPUVEVF9XSVJfTkVXU0xFVFRFUl8wX0RBSUxZX1paJm1iaWQ9Q1JNV0lSMDkyMTIw/5cc9dfebfc942d13eb1e5f9eDe873c205

Hi, so I recently installed arch Linux and want to use Firefox as my browser. However ever since I installed it, it takes a long time to launch the program. It consistently takes just over 26 seconds to launch. After it's open everything works fine besides that. Also when I launch Firefox from the terminal I get this message "ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. ATTENTION: default value of option mesa_glthread overridden by environment. Missing chrome or resource URL: resource://gre/modules/UpdateListener.jsm Missing chrome or resource URL: resource://gre/modules/UpdateListener.sys.mjs" I have been looking at some help threads but I can't make sense of what they are talking about. Hopefully this makes some amount of sense to you.